These Banana Blondies with brown sugar frosting are out of this world delicious. They’re perfectly flavored with banana and literally melt in your mouth!
Looking for more Banana Recipes? Try my Chocolate Chip Banana Bread or my Banana Bread Crumb Cake!

Banana Blondies Woth Brown Sugar Frosting
These are a great alternative to banana bread, and perfectly easy to make! They’re great to serve at parties, or for a sweet lunchbox treat!

How to Make These Amazing Banana Bars
Grab you a banana and some brown sugar.

Then melt your butter. Or brown it if you’re nasty.
Mix the butter and brown sugar together.

Mix in the rest of your ingredients…including the banana, that you need to mash, btw.

And then spread it in to a lined pan…

Bake it up for about 25 minutes. And if you want (you want) make some brown sugar frosting. It’s so yum. and when they’re cooled spread it all up on there…

I swear you need to make these. They are THAT good.

If you like banana stuff, check out these other recipes I’ve got:
- Banana Bread Crumb Cake
- Brown Sugar Banana Bread
- Banana Bread Cookies
- Peanut Butter Cup Banana Bread
Banana Blondies
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 12 blondies 1x
- Category: Dessert
- Method: Oven
- Cuisine: American
Description
These Banana Blondies with brown sugar frosting are out of this world delicious. They’re perfectly flavored with banana and literally melt in your mouth!
Ingredients
Blondies
- 1/2 cup butter, melted and if desired browned
- 1 cup light brown sugar, packed
- 1 egg
- 1 1/2 teaspoon vanilla
- 1/4 teaspoon kosher salt
- 1 cup all purpose flour
- 1/2 cup mashed banana (1 medium banana)
Brown Sugar Frosting
- 1/4 cup butter
- 1/2 cup light brown sugar
- 2 tablespoon milk
- 1 cup powdered sugar
Instructions
Blondies
- Preheat oven to 350°F. Line an 8×8 baking dish with parchment paper and coat with nonstick spray. Set aside
- In a large saucepan melt the butter (and if desired continue cooking the butter until it’s amber in color, stirring frequently *see note). Allow the butter to cool for 5 minutes and stir in the brown sugar, vanilla, and salt to combine. Stir in the egg until smooth and finally the flour and mashed banana. Spread in prepared pan.
- Bake for 30 minutes, or until the center is set.
- Transfer pan to wire rack to cool.
- Frost the blondies when they are mostly cooled.
Brown Sugar Frosting
- In a medium saucepan melt butter. Add brown sugar and milk and stir until mixture comes to just a boil. Remove from heat, allow to cool for 5 minutes.
- Stir in powdered sugar with a whisk.
- Spread on top of blondies and allow frosting to set and blondies to cool completely before cutting into squares.
Notes
If you choose to brown the butter, melt butter in saucepan and continue cooking, once it’s melted by swirling the butter in the pan until butter reaches a deep golden brown color.
Nutrition
- Serving Size:
- Calories: 151
- Sugar: 20.1 g
- Sodium: 128.2 mg
- Fat: 4.8 g
- Carbohydrates: 26.3 g
- Protein: 1.8 g
- Cholesterol: 11.9 mg












These look amazing! I love the brown sugar frosting 🙂
These blondies look so tempting and so delicious! Must try recipe! Thanks for sharing.
Buying any big purchase like a car is stressful. These blondies look amazing, love the idea of the brown sugar frosting.
Gorgeous Shelly! They look so moist and delicious! Love the step by step instructions too.
Love sheet cakes! Blondie are even better with bananas You are a blogger fail, you simply are too good for titles. There really is a lot of stigmas around blogging too; too bad they fail to see who great is are as an individual artist
Sound great!
Omg that frosting!!! I can’t stop looking at these, actually. I like my desserts simple and rich, and these babies qualify big time —Pinning and sharing!
I’m just shocked he didn’t know who you were. Can’t believe you had to explain yourself. Ugh. Duhhhh, I make the best desserts on the internet. I’m S-H-E-L-L-Y.
I think these are going on the list to make this week! Pinned!
I guess I’m nasty, because I’m definitely going to brown that butter! Best line I’ve heard in awhile! These look delightful!
Getting ready to go on a vacation to stay in a cabin and needed an easy , portable dessert, and I had a bunch of ripe bananas to get rid of . I doubled the recipe and used about a trap of baking powder also, along with 4 1/2 small very ripe bananas. I make a lot of banana cakes,, and I have to say, this my be my new favorite! The icing was divine! (Of course, I used heavy cream instead of milk, just because I had some). My 12 year olds eyes lit up when he took his first bite of his banana bar, and he said , “mmmm”. Score!
So glad you liked them!!
I love how supremely moist these babies are! My #1 fave thing to make is blondies. In any way I can. 1 stick of butter, 1 c of flour, 1 c brown sugar…you can never go wrong. Genius to put bananas in them!! And the frosting. Brown sugar frosting is the best! pinned
you make MONEY blogging? How does that work? <— if I had a nickel. I just tell people now that I'm a writer. Or a photographer. It's easier. 🙂